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arXiv · 1602.06264

Comment on article "Line of Dirac Nodes in Hyperhoneycomb Lattices"

Marcos Veríssimo-Alves·Rodrigo G. Amorim·A. S. Martins
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Abstract

Recently, carbon hyperhoneycomb ($\mathcal{H}$-n) lattices have been proposed to be, through a one-$p$ orbital tight-binding (TB) model with nearest-neighbor (n.n.) hopping, a family of strong 3D topological insulators (K. Mullen, B. Uchoa and D. T. Glatzhofer, Phys. Rev. Lett. 115, 026403 (2015)) . In this Comment we show, through Density Functional Theory (DFT) and Extended Hückel Theory (EHT) calculations for the $\mathcal{H}$-0 lattice, that the TB Hamiltonian used by the authors is inadequate, invalidating the presented conclusions.

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Marcos Veríssimo-Alves, Rodrigo G. Amorim, A. S. Martins. 2016-02-17. Comment on article "Line of Dirac Nodes in Hyperhoneycomb Lattices". https://doi.org/10.1103/physrevlett.116.249701

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